Home / 13,127.55-18,116.47-7,462.53

Finding the Fourth Proportional to 13,127.55, 18,116.47 and 7,462.53

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Solution

The fourth proportional to 13,127.55, 18,116.47 and 7,462.53 is: 10,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.55 : 18,116.47 = 7,462.53 : x
  2. Step 2: Convert to fraction form
    13,127.55/18,116.47 = 7,462.53/x
  3. Step 3: Cross multiply
    13,127.55x = 18,116.47 × 7,462.53
  4. Step 4: Simplify right side
    13,127.55x = 135,194,700.87
  5. Step 5: Solve for x
    x = 135,194,700.87/13,127.55
  6. Step 6: Final answer
    x = 10,298.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.